1. boundary line a line that indicates a boundary
  2. boundary layer the layer of slower flow of a fluid past a surface
  3. bountifulness the property of copious abundance
  4. ponderousness an oppressive quality that is laborious and solemn and lacks grace or fluency
  5. borderline a line that indicates a boundary
  6. underline draw a line or lines underneath to call attention to
  7. unnaturalness the quality of being unnatural or not based on natural principles
  8. Punta Arenas a city in southern Chile on the Strait of Magellan
  9. boundless seemingly limitless in amount, number, degree, or extent
  10. orderliness a condition of regular or proper arrangement
  11. boundlessness the quality of being infinite; without bound or limit
  12. underling an assistant subject to the authority or control of another
  13. underlying in the nature of something though not readily apparent
  14. unruliness the trait of being prone to disobedience and lack of discipline
  15. boundedness the quality of being finite
  16. naturalness the quality of being natural or based on natural principles
  17. controlling able to control or determine policy
  18. contour line a line drawn on a map connecting points of equal height
  19. pondering deeply or seriously thoughtful
  20. untimeliness the quality of occurring at an inconvenient time